HCID 86610269, compound → HCID 178459857, compound

Participants

Reaction Steps

Following the general nucleophilic carbamoylation procedure, tranexamic acid (472 mg, 3.0 mmol) and 1-[(2,5-dioxopyrrolidinyl)oxycarbonyloxy]propyl 2-methylpropanoate (575 mg, 2.0 mmol) were reacted in the MTBE/acetone/water mixture (16 mL) to yield the title compound 30 (651 mg, 99% yield) as a white powder after work-up and mass-guided preparative HPLC purification. 1H NMR (400 MHz, DMSO-d6): δ=0.82-0.94 (br. m, 5H), 1.06 (d, J=6.8 Hz, 3H), 1.07 (d, J=6.8 Hz, 3H), 1.17-1.39 (br. m, 3H), 1.64-1.76 (br. m, 4H), 1.83-1.91 (br. m, 2H), 2.09 (tt, J=12.4, 3.6 Hz, 1H), 2.50 (hept., J=6.8 Hz, 1H), 2.77-2.84 (br. m, 2H), 6.52 (t, J=5.6 Hz, 1H), 7.43 (t, J=6.0 Hz, 1H), 11.98 (br. s, 1H). MS (ESI) m/z 352.06 (M+Na)+; 328.02 (M−H)−.

Provenance & Evidence